Nuclear temperature measurements with helium isotopes

被引:0
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作者
Xi, H [1 ]
Huang, MJ
Lynch, WG
Tsang, MB
Dinius, JD
Gaff, SJ
Gelbke, CK
Glasmacher, T
Kunde, GJ
Martin, L
Montoya, CP
Pratt, S
Scannapieco, E
Milazzo, PM
Azzano, M
Margagliotti, GV
Rui, R
Vannini, G
Colonna, N
Celano, L
Tagliente, G
D'Agostino, M
Bruno, M
Fiandri, ML
Gramegna, F
Ferrero, A
Iori, I
Moroni, A
Petruzzelli, F
Mastinu, PF
Friedman, WA
机构
[1] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA
[2] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA
[3] Dipartimento Fis, Trieste, Italy
[4] Ist Nazl Fis Nucl, Trieste, Italy
[5] Ist Nazl Fis Nucl, I-70126 Bari, Italy
[6] Dipartimento Fis, Bologna, Italy
[7] Ist Nazl Fis Nucl, I-40126 Bologna, Italy
[8] INFN, Lab Nazl Legnaro, Legnaro, Italy
[9] Univ Milan, Dipartimento Fis, Milan, Italy
[10] Ist Nazl Fis Nucl, I-20133 Milan, Italy
[11] Univ Padua, Dipartimento Fis, Padova, Italy
[12] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA
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中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
Temperatures were determined from double isotope ratios and excited state populations and corrected for secondary decay for central Au + Au collisions at 35 A MeV. Consistent emission temperatures were obtained both born double isotope ratios and excited state populations. Center of mass energy spectra have been studied for Helium and Hydrogen isotopes emitted from highly excited residues produced in central Xe + Cu reaction at 30 AMeV. Differences between the spectra for He-3 and He-4 are observed that can be attributed to the time dependent evaporative cooling of hot nuclei.
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页码:160C / 167C
页数:8
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